What causes the error message "VAM0093J"

Products

• Allocate DASD Space and Placement

Issue/Introduction

I had a failure with one of the applications with error "VAM0093J".  What would cause this? 

Environment

Allocate

Resolution

The problem you encountered is evident by this part of the VAM0093J msg:

VAM0093J REDUCE OPERATION HALTED BECAUSE MINIMUM_PERCENT VALUE REACHED, OR CANNOT REDUCE BELOW 1 AVR UNIT
 
Looking for the instances of SET &RB = n and SET &MP = n, there are multiple instances where the value of &RB and/or &MP was less than 10.
Setting &RB to a value less than 10 can cause additional overhead.
Setting &MP to a value less than 10 can cause the VAM0093J errors because VAM is not able to reduce the allocation or extent amount to that small of a value.
 
It would be suggested that all of the &RB and &MP statements do not specify a value less than 10.